Mirroring is disabled by default. To enable mirroring in single port, the following command can be used:

enable mirroring to port
# To enable mirroring on multiple ports, use the following command:
enable mirroring to port-list loopback-port
# The port-list is a list of monitor ports which will transmit identical copies of mirrored packets. The
# loopback-port is an otherwise unused port required when mirroring to a port-list. The loopback-port is
# not available for switching user data traffic.
# To disable mirroring, use the following command:
disable mirroring